5 Signs It's Time to Replace Your Windows | Des Moines, IA

5 Signs It's Time to Replace Your Windows

If you've felt a draft standing next to a closed window this winter, or you're staring at a heating bill that doesn't add up, you already know something's off. Here's the short version: if your windows are drafty, fogged, hard to operate, visibly damaged, or driving your energy bills up, it's time to replace them — not repair them. Below is how to tell which one you're dealing with, and why it matters more in Iowa than almost anywhere else.

We're a second-generation owner of Midwest Seamless. I worked alongside our founder for 17 years before taking over the shop, and in that time I've walked through thousands of homes across Bondurant, Ankeny, Altoona, Pleasant Hill, Urbandale, West Des Moines, Clive, and Des Moines proper. The pattern is almost always the same: homeowners live with a problem window for years because it doesn't seem "bad enough" yet, then finally call once a winter storm or a summer heat wave makes it impossible to ignore. If you can catch it earlier, you'll save real money.

Why this matters more here than in milder climates

Central Iowa doesn't do mild. We swing from -20°F windchill in January to 95°F and humid in July, sometimes within the same year, and that constant expansion and contraction is exactly what breaks down window seals, warps frames, and works locking hardware loose. A window that would coast along fine in a place with gentler weather starts failing here on a faster timeline — which is also why so much of our older housing stock, from bungalows near downtown Des Moines to farmhouses outside Altoona and Pleasant Hill, is still running on windows that were never built for this kind of swing.

The 5 signs

1. You feel a draft even when the window is closedRun your hand along the edge of the frame on a windy day. Moving air means the seal has failed or the frame has shifted enough that it's no longer sealing tight — caulk won't fix that once the frame itself has warped.

2. Your energy bills are climbing without an obvious reasonWindows are one of the biggest sources of heat loss in an Iowa home, especially anything original to a house built before the 1990s. If your bill is trending up and nothing else has changed, this is one of the first things worth ruling out.

3. There's fog or condensation trapped between the panesThat cloudy look between the layers of glass means the seal on the insulated glass unit has broken and the gas fill has escaped or moisture has gotten in. Once you see fog between the panes, that's a replacement, not a cleaning problem — it won't clear up from either side.

4. The window is hard to open, close, or lockPainted shut, swollen with humidity, or a lock that won't quite catch — these usually mean the frame has shifted or the materials have degraded. It's also a real safety issue if you'd ever need that window as a fast exit.

5. You can see rot, cracking, or water staining around the frameWood-framed windows are especially vulnerable here. Soft spots, paint that keeps peeling no matter how many times you repaint, or a water stain on the wall below the window means moisture is getting in, and it's usually more advanced than it looks from the outside.

How old is "too old"?

Most double-pane vinyl windows last 15 to 25 years before the seals and hardware start giving out. If your home still has its original single-pane windows — common in a lot of the older neighborhoods around Des Moines, Bondurant, and Altoona — you're almost certainly past that window already, even if nothing looks obviously broken. Age alone doesn't mean you need to replace them immediately, but it does mean it's worth having them looked at.

Single-pane vs. double-pane vs. triple-pane — does it matter?

Single-pane glass has one layer and essentially no insulation value; if that's what you've got, you're likely paying for it every month. Double-pane is the standard for most homes here — two layers of glass with insulating gas between them. Triple-pane adds a third layer and can be worth it for a north-facing wall or an especially wind-exposed spot, but it's not a must-have for every room in every house. We'll tell you honestly if triple-pane is worth the upgrade for your specific situation instead of upselling it across the board.

Material matters too. Vinyl (what we install — SoftLite Imperial Elite and Barrington, built with fusion-welded uPVC frames) resists rotting, warping, and corrosion in a way older wood and aluminum frames don't. Fiberglass is a solid option as well, generally at a higher price point; for most homeowners in our service area, vinyl gives you the better balance of cost and long-term durability for what our winters and summers put a window through.

What does it actually cost?

Honestly, it depends — on window size, material, how many you're replacing at once, and what the install involves (a straightforward swap versus a full frame or header repair). Replacing all 10 windows in a typical home costs meaningfully more than swapping out the two worst offenders, and either approach can make sense depending on your budget and how urgent the problem is. Rather than quote you a number that may not reflect your actual house, we'll walk your home, look at what's really going on with your current windows, and give you real numbers from an in-home visit — the same "kitchen table" consultation we've done since 1963.

A quick note on egress windows

If you've got a basement bedroom or living space, the window down there likely has to meet Iowa's egress code — a minimum opening size so it can be used as a fire exit. Replacing an egress window isn't always a like-for-like swap the way a standard window is, so it's worth having someone who knows the local code take a look rather than assuming any replacement window will pass.

Why Des Moines-metro homeowners choose Midwest Seamless

We've been in business since 1963, and I've personally been in this shop for going on two decades now — my own kids and grandkids run around our Bondurant showroom, and this business is genuinely a family one, not just a name on a truck. We're a BBB Accredited Business with an A+ rating, licensed and insured with the State of Iowa (#C073382), and our SoftLite Imperial Elite and Barrington windows carry a fully transferable lifetime warranty. Every project starts with an in-home consultation and custom measurements, because a lot of homes in this region have shifted just enough over the decades that "standard size" doesn't always fit — we build for your house, not a catalog size.

Book Your Free In-Home Window Estimate →

FAQ

How long do windows usually last before they need replacing?

Most vinyl or wood windows last 15 to 25 years depending on the material and how well the seals and hardware have held up. In Iowa's freeze-thaw climate, original single-pane or early double-pane windows in homes built before the 1990s are often well past that window.

Is it cheaper to repair a window or replace it?

A single cracked pane or a broken lock can often be repaired. But if the seal has failed, the frame has warped, or you're dealing with it on multiple windows, repair costs add up fast and replacement usually pays for itself faster through lower energy bills.

What's the difference between single-pane, double-pane, and triple-pane windows?Single-pane has one layer of glass and almost no insulation value. Double-pane is the standard for most Iowa homes. Triple-pane adds a third layer and extra insulation, useful for especially cold or wind-exposed spots but not necessary everywhere.

How much does it cost to replace windows in Des Moines?

It depends on size, material, number of windows, and installation complexity. The most accurate answer comes from a free in-home estimate based on your actual house, not a national average.

Do egress windows need to be replaced differently than regular windows?Yes. Basement egress windows have to meet Iowa's minimum opening-size code, so it isn't always a like-for-like swap. Have someone familiar with local code review it first.

Does Midwest Seamless offer a warranty on window replacement?

Yes — our SoftLite Imperial Elite and Barrington windows carry a fully transferable lifetime warranty, and our installation is backed by our own workmanship guarantee.